• Title/Summary/Keyword: Network Service Industry

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A Study on International Trade of Water Transport Service using Social Network Analysis (소셜네트워크분석(SNA)을 활용한 수상운송서비스 무역 네트워크 분석 연구)

  • Seon-youl Park
    • Korea Trade Review
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    • v.47 no.3
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    • pp.75-92
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    • 2022
  • This study aims to analyze the International trade network of Water transport service using Social Network Analysis for defining the status of Korean Water transport industry. This study use World Input-Output Table of Asian Development Bank from 2000 to 2020 and build the International trade matrix of Water transport service from that. Therefore, this study analyze Out-degree centrality, In-degree centrality and betweenness centrality of Korea and other main countries in the matrix of World Water transport industry. As a result, Korea rank above 10th in the all centralities and the total output also rank 8th in the world, therefore, this study show the importance of Korean Water transport industry in the world. However, Singapore has the highest centrality in the world, even though China has the largest Total output among 63 countries.

Service Innovation in Digital Contents Industry: A Case of Korean Online Games (디지털컨텐츠산업의 서비스혁신 패턴 분석: 온라인게임 사례를 중심으로)

  • Nam, Young-Ho
    • Journal of Technology Innovation
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    • v.17 no.1
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    • pp.119-148
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    • 2009
  • The paper presents and empirically tests a model of the digital contents(DC) innovation systems that enables us to study interactions between users, service providers, contents developers and network providers, and to examine the relationship between manufacturing innovation and service innovation as well as patterns of innovation in the DC industry. The framework of Gallouj and Weinstein(1997) and Gallouj(2002) is modified into the DC innovation model according to characteristics of the DC industry, that is, user involvement and network externalities. The model is applied to a case analysis that traces the growth of the online game industry in Korea since its introduction. The model offers several advantages over other approaches in understanding the dynamics in the DC industry. Most importantly, it provides a single unified basis within which both service innovation resulting from users and service providers and manufacturing innovation induced by contents developers, platform holders and network providers are analyzed. The distinction between service and manufacturing innovation is important in many ways, for instance in selecting proper government policy tools for promotion or regulation of the DC industry. Second, the Korean online game industry has experienced both radical innovation during the beginning period and non-radical innovation throughout the maturation period. The model developed herein helps to illustrate several types of non-radical innovations such as recombinative innovation that are crucial to sustainable development of the DC industry. Third, the model clarifies impacts of network externalities that are characteristics of the DC industry.

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Digital Content Protection and Computer Forensics Evidence Management Mechanism using MPEG-21 in Network Service Environment (네트워크 서비스 환경에서 MPEG-21을 활용한 디지털 콘텐츠 보호 및 컴퓨터 포렌식스 증거 관리 메커니즘)

  • Jang, Eun Gyeom;Lee, Bum Suk
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.6 no.2
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    • pp.129-141
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    • 2010
  • In network service environment, cultures from diversified fields are easily accessible thanks to the convenient digital content services. Unfortunately, unauthorized access and indiscreet misuse behaviors have deprived content owners of their copyrights. This study suggests an integrity-ensured model applicable for forensic evidence of digital content infringement in network service environment. The suggested model is based on MPEG-21 core components for digital content protection and the system is designed in connection with the components of digital content forensics. Also, the present study suggests an efficient technology to protect and manage computer forensic evidence and digital content by authorizing digital content use and catching infringing logs of authorized users without lag in network environment for the benefit of network security and reliability.

Recommendation Method for Social Service in Ubiquitous Environment

  • Kim, Sung Rim;Kwon, Joon Hee
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.7 no.2
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    • pp.19-27
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    • 2011
  • Recent development of information technologies produces a lot of community services. Social Network Service is one of the community services on the world wide webs. In the Social Network Service, a user can register other users as friends and enjoy communication through a virtual message. Previous researches show a few social service methods using manually generated tagging. However, the manual social tagging is not widely used in many social network services. Moreover, they do not consider ubiquitous computing environment. We propose a recommendation method for social service using contexts in ubiquitous environment. Our method scores documents based on context tags and social network services. Our social scoring model is computed by both a tagging score of a document and a tagging score of a document that was tagged by a user's friends.

Analysis on the Inter-Industry Network between the Service Industry in the Korean Capital Region and 10 Industrial Sectors in 20 City-Regions of China-Japan-Korea (한국 수도권 서비스업과 한·중·일 20개 도시지역 내 10개 산업부문과의 산업 간 네트워크 분석)

  • Han, Jihye;Kim, Kabsung;Jung, Hayoung
    • Journal of the Korean Regional Science Association
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    • v.32 no.4
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    • pp.51-73
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    • 2016
  • Considering the intensified ties between Korean service industry and the other industries in China and Japan, this study empirically analyzes the inter-industry network between the service industry in the Korean capital region and 10 industrial sectors in 20 city-regions of China, Japan, and Korea(CJK). Firstly, unit structures are constructed based on the estimated CJK interregional input-output tables to understand the production connection. Moreover, the reorganized unit structures are visualized as networks and examined from various angles. As the results of the analysis, the inter-industry network of the service industry in the Seoul Metropolitan Area is still mostly dependent on domestic industries, especially on manufacturing industry, while it shows the tendency to be weakly connected to the industries in Chinese and Japanese city-regions.

Design of Secure Protocol based on trust model and trust values for Ubiquitous Sensor Networks (Ubiquitous Sensor Network에서 안전성 증가를 위한 신뢰모델과 신뢰값에 관한 프로토콜 설계)

  • Jang, Kun Won;Suh, Jang Won
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.4 no.3
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    • pp.9-18
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    • 2008
  • Mobile devices do not need the fixed network infrastructure in ad-hoc network, these devices communicate each other through the distributed control. Accordingly, mobile devices can discover several services using dynamic searching method and provide safely public ownership of these services. Ad-hoc network needs the distributed control and topology of dynamic network because the limited power for processing and network communication. This paper is devoted to provide the secure protocol that provides efficient services discovery using SDP(Service Discovery Protocol) and considers the security requirements. Proposed protocol provides the distributed control based on PKI without central server, the discovery of trusted service, secure telecommunication, the identification among mobile devices, and service access control by user authority.

A Systems Approach to Quality of Service in the Telecommunication Industry (통신산업에서의 서비스 품질에 대한 개념적 이해와 시스템적 접근법)

  • 김도훈
    • Proceedings of the Korean Society for Quality Management Conference
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    • 2004.04a
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    • pp.376-381
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    • 2004
  • The goal of this article is to stress the importance of good quality in telecommunication services and to introduce two basic concepts on the service quality in the telecommunication industry: QoS(Quality of Service) and NP(Network Performance) Based on these notions, presented is an integrated scheme for quality improvement in telecommunication services. Tn particular , proposed with this framework Is an efficient and effective establishment of a balanced set of parameters for continuous monitoring and correct ions of service performance.

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A Study on the Categorization of Home Network Services and Its Supplies by Construction Industry (국내 홈네트워크 서비스의 분류 및 공급 실태에 따른 홈네트워크건물인증제도의 적합성에 관한 연구)

  • Song, Kwang-Chul;Hwang, Young-Sam;Jung, You-Kyoung
    • Proceeding of Spring/Autumn Annual Conference of KHA
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    • 2008.11a
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    • pp.469-474
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    • 2008
  • In the last decade many advanced home network services have been provided by construction industry, and many researches on the area have been carried out. One of the problems we are confronted with is that we do not have a standard classification scheme for home network services yet. In this paper a more stable classification scheme is suggested after comparative analysis of many different schemes in previous researches. More commonly highly attended service categories in the scheme is selected, and those are examined in terms of how commonly they are supplied by construction industry. In the later part of this paper the current home network building certification code is reviewed if the code complies with the highly attended categories in the classification scheme suggested in this paper. Some ideas to improve the current certification code is suggested by adding or optionally adding the highly attended categories.

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Design and Implementation of MOST Network Service over POSIX (차량용 MOST 네트워크를 위한 POSIX 기반의 Network Service 설계 및 구현)

  • Lee, Mu-Youl;Chung, Sung-Moon;Jin, Hyun-Wook
    • IEMEK Journal of Embedded Systems and Applications
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    • v.5 no.1
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    • pp.23-28
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    • 2010
  • The automotive industry tries to provide infotainment systems to emerging automobiles. Since the infotainment systems require various peripheral devices and network connectivity, legacy operating systems such as Linux and Windows can be much preferred due to its plentiful device drivers and multimedia applications while the operating systems following OSEK standard are used for automotive electronic control units. Thus it is highly desired that the system software supporting infotainment applications can be portable over different legacy operating systems providing unified programming interfaces. The majority of legacy operating systems support POSIX interfaces for application development. MOST is an automotive network standard for infotainment systems. Network Service defines the protocol stacks for MOST control data, which is essential to implement infotainment applications over MOST. In this paper, we suggest a POSIX-based Network Service so that we can utilize legacy device drivers and applications for automotive infotainment systems. We measure the performance of the POSIX-based Network Service and show that its overhead is not significant.

Analysis of the Usage patterns of Social Network Service Users (소셜 네트워크 서비스 사용 시기에 따른 사용자 이용패턴 연구: 페이스북을 중심으로)

  • Park, Sang Hyeok;Oh, Seung Hee;Sung, Haeng Nam
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.9 no.4
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    • pp.251-265
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    • 2013
  • The emergence of social network services, is changing the foundation of human relationship formation and method of communication of individuals through sharing of free information. Social network service is a service to support or facilitate an on-line extension of off-line network among people by helping them to share personal profile. History of social network services very short. But users of the various layers is increasing rapidly and ripple effect social as a result is very large. The focus of existing research was mainly devoted to motivation of use and acceptance of social network services. Currently the use of SNS was maturing. Thus, in-depth research on the use pattern of SNS users is needed. The purpose of this study is that, for Facebook in social network services, to analyze the changes in the initial stage of use, medium-term, usage patterns at the current time. Results of the study by analyzing the characteristics of the change in the pattern of usage of user of Facebook, it can be used as basic materials for SNS researchers and service provider.